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Finding the Fourth Proportional to 2,216.96, 3,325.44 and 677.76

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Solution

The fourth proportional to 2,216.96, 3,325.44 and 677.76 is: 1,016.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.96 : 3,325.44 = 677.76 : x
  2. Step 2: Convert to fraction form
    2,216.96/3,325.44 = 677.76/x
  3. Step 3: Cross multiply
    2,216.96x = 3,325.44 × 677.76
  4. Step 4: Simplify right side
    2,216.96x = 2,253,850.21
  5. Step 5: Solve for x
    x = 2,253,850.21/2,216.96
  6. Step 6: Final answer
    x = 1,016.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.